ปอพ is the Thai abbreviation for ปรับอากาศพิเศษ = Special Air-conditioned, so ปอพ 76 = Special air-con bus 76.

On the bus windscreen is usually written the origin station and the terminal station, while the bus route is written on the sides of the bus (unfortunately many buses only feature this piece of information in Thai, while only a few feature it in Thai and also in English).

Buddhist monks and novices travel for free and have reserved seats in all buses.

Be careful:

Buses with the same numbers but of different colours don't necessarily follow the same route.

Also be aware that some buses (like the Orange air-con 511 or the Red non-air-con bus 2) follow two different routes: the normal route and the express route through the expressway.

In that case the bus features a yellow sign on the windscreen and also on the side which says: “ทางด่วน” (= Expressway).

This sign is written either in Thai only or in Thai and English.

If
you see the “Expressway” sign just ask the conductor if the bus is
still stopping at your expected destination, as the buses taking the
expressway obviously skip some stops from the original route.

A BRT ticket costs a flat rate of 5 THB (2014) and can be purchased at the ticket counters or the ticket selling machines which are located at each station.

All BRT buses are yellow.

The Bangkok Mass Transit Authority (BMTA) has been trying to improve the service of its buses due to regular complaints for speeding or rudeness.

Some bus routes have even attracted the interest of the media for their dangerousness or the impoliteness of their drivers and conductors.

For example, the bus route number 8 which connects Memorial Bridge to Happy Land, was declared in 2014 as the most dangerous route by the people of Bangkok and has attracted a lot of negative comments notably on the social media.

The drivers of the Green and Orange non-air-con minibuses are well-known for their fast and risky way of driving.

Added to the fact that these buses are very often crowded you will have to hold tight if you don’t want to fall over!